Symbol prologue code checks if funciton lines up with symbol and uses function prologue code with line info if so.

Differential Revision: http://llvm-reviews.chandlerc.com/D1082

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185553 91177308-0d34-0410-b5e6-96231b3b80d8